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Synthesis 1991; 1991(3): 228-232
DOI: 10.1055/s-1991-26429
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Darstellung von 1,1-Diphenylethanole durch Addition von Organotitan-Verbindungen an substituierte Aceto- und Benzophenone

Vladimir Dimitrov* , Stephan Stanchev, Branimir Milenkov, Teo Nikiforov, Plamen Demirev
  • *Institut für Organische Chemie, Bulgarische Akademie der Wissenschaften, BG-1113 Sofia, Bulgaria
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Publication Date:
17 September 2002 (online)

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Preparation of 1,1-Diphenylethanols by Addition of Organotitanium Compounds to Substituted Aceto- and Benzophenones The 1,1-diphenylethanols 5a-h were prepared by the addition of phenyltitanium triisopropoxide (3) to 4-substituted acetophenones 1a-h. The titanium tetraalkoxide 7, formed in situ from 3 and 1a, forms complexes with up to two molecules of 1a, this was established by 13C-NMR. Preparation of the alcohols 5a-f was also carried out by the reaction of methyltitanium triisopropoxide (4) with 4-substituted benzophenones 2a-f.